Technical Status of dry-type transformer

Voltage level: At present, mass production is mainly concentrated in 10 kv voltage level, most of the power stations for 6 kv voltage. 15 ~ 20 KV products are often ordered. At present, the international resin insulated dry-type transformer * * * * * * * * * * * * * * * * * Voltage is 35kV, several large factories in China have produced nearly 100 KVA 35kV products in operation around the grid.

     CAPACITY: (1) distribution transformer: 10/0.4 Kv and 20/0.4 kv, 35/0.4 kv distribution transformer capacity of 30 ~ 2500kVA, by the low-voltage PC screen into the line switch blocking capacity limit, has not yet seen more than 2500kVA this capacity; (2) power transformers: 10,20,35 KV power transformers with a production capacity of 20,000 kva/24000 KVA (AN/AF) and 35 kv Asia's first dry-type transformer with a capacity of * * * * * And voltage * * * * * In 1996, it indicates that our country is in the advanced level of the world in the manufacture technology of large capacity transformer. Loss and noise: China's dry-type transformer manufacturing technology research and innovation, mainly focused on the optimization of performance parameters, especially in the transformer loss and sound level of these world-wide issues, china has made a lot of gratifying achievements, so that China's dry-change loss (especially no-load loss) and noise greatly reduced. According to relevant statistics, the total loss level of SC (B)9 series is 15-20% lower than that of the imported SC series, and the loss of no-load is 25% lower, the results are applied to the new series SC (b)8 and SC (B)9 products. The noise of SC (B)9 products is 15 ~ 20% lower than that of SC products. The noise of 2500KVA and below distribution transformer can be controlled in 50dB, 35kV extra large capacity (such as 1000kva, 16000kVA) dry-type transformer can be controlled in 55dB.